For my first many years of riding (even in a colder winter state, and still riding), I would just bundle up, long johns top and bottoms, t-shirt, heavy shirt, heavy coat, heavy gloves and stop for hot coco often if a longer ride. Then, after I got my 2001 GL1800 and started riding with others on Goldwings; found out that heated clothing existed. I first got some Gerbing gloves, then found out that Gerbing (back long before the Gerbing family lost the business-or cheated out of it - whichever it really was) would sew in heated panels inside an existing coat liner. My leather coat had such, so over a summer, I sent them mine and the needed check. I am still using that very liner, changing it from coat to coat sewing in needed zippers. It currently has 2 full wrap-around zippers of the same type, but reversed sides so it goes in my leather with one and my mesh coat on the other. I just cannot fathom how I stayed warm enough riding in those pre "heated gear" days. Today, I have a different set of gloves (Gerbing Family, second chance unable to use their own family name), but rarely use them due to heated grips with less bulky gloves. I also have a set of leather chaps that I wired up taking advantage of a mesh lining it had to run the Teflon coated wire through the mesh. Since my 2018 is "colder in winter" to ride than my 2010, I have a dual controller to operate coat and chaps separately on it. My 2010 just has a single controller and I connect the chaps to the coat. I find that keeping my legs warmer goes a long way to keeping my feet warm and have not needed heated socks or shoe inserts.
Gerbing Heated gear when it was owned and operated by the Gerbing family was a top notch company with great long lasting products. I still have 2 controllers from those days going strong in double digit years of use. Controllers with the "Gerbing" name but no longer by the Gerbing Family have been "2 year" products at best having to replace rusted out plugs or have a totally dead controller.